KR20190094788A - Water Piping Design Method Using BIM System - Google Patents

Abstract

According to an aspect of the present invention, a method for designing a water pipe using a BIM system includes: (a) modeling a plurality of pipes applied to the building in a modeling server; (b) inputting a name of the pipe modeled for each generation into a name server; (c) inputting analysis conditions to the condition server for analyzing each of the pipes; (d) analyzing a plurality of pipe diameters and quantities to be applied to the building in an analysis server; (e) expressing the pipes analyzed by the analysis server in the expression server; may include.

Description

Water Piping Design Method Using BIM System

The present invention relates to a water pipe design method using a BIM system, and more particularly, to a water pipe design method using a BIM system that can derive an accurate pipe diameter and quantity before a building is constructed.

In general, pipes for aeration, drainage, or water supply are essential in structures that are made inhabitable by humans. In addition, piping for refueling and exhausting the driving equipment is essentially made in the apparatus in which the various driving equipment is installed. That is, the plumbing facility is an essential infrastructure to be equipped with various kinds of structures or equipment.

In order to calculate the exact quantity of such pipes, it is possible to increase the accuracy of quantity and unit cost calculation and to facilitate the maintenance of buildings. Recently, BIM (building information modeling) technology is increasing in the operation stage of buildings and factories. There is a trend.

However, BIM technology requires a lot of manpower and time, and even if an integrated model that can be used in various programs is constructed, there is a problem that it is difficult to calculate a suitable diameter and quantity of piping than an integrated model based on a single program.

In addition, various analysis methods are used to utilize the water pipe system, but the general analysis method has a problem of overdesign because it does not take into account the physical characteristics that are different from the system to which the water of high temperature is supplied.

The present invention has been made to solve the above problems, the object of the present invention is to utilize the BIM system that can prevent the cost caused by the overdesign by calculating the exact pipe diameter and quantity before the construction of the building It is to provide a pipe design method.

Still another object of the present invention is to provide a water pipe design method using a BIM system that can calculate the pump head and authority with differential pressure information derived by using an equation for calculating the pipe diameter and quantity of the pipe. .

The water pipe design method using the BIM system according to an aspect of the present invention for achieving the above object in the design method of the water pipe is constructed in the building, (a) modeling a plurality of pipes applied to the building Modeling at the server; (b) inputting a name of the pipe modeled for each generation into a name server; (c) inputting analysis conditions to the condition server for analyzing each of the pipes; (d) analyzing a plurality of pipe diameters and quantities to be applied to the building in an analysis server; (e) expressing the pipes analyzed by the analysis server in the expression server; may include.

In the step (d), if the results of the pipes analyzed by the analysis server is not suitable, the step of changing the diameter and type of the pipes, if not bonded to the building, and reinterpreting the changed pipes in the analysis server ; It may be provided.

The modeling server may include a generation pipe unit for modeling a generation pipe connected to each generation of the building, and a main pipe unit for modeling a main pipe extending to the ground by connecting a plurality of the generation pipe.

The name server may input a building and a lake into the generation pipe modeled for each generation of the building.

The condition server includes a generation condition part for inputting at least one analysis condition of the flow rate, differential pressure, and fluid type in the generation pipe, and a main condition part for inputting at least one analysis condition of the flow rate, differential pressure, and fluid type of the main pipe. can do.

The analysis server includes a condition input unit for inputting at least one target condition among a target flow velocity, a target differential pressure, a water temperature, and a type of the pipe in the pipe, and a calculation and interpreter for calculating the pipe diameter and quantity of the pipe by a formula. And, it may be provided with a determination server for determining whether the pipe diameter of the pipe analyzed in the calculation analysis unit is properly applied to the building.

In the method of determining the pipe in the determination server, the step of determining whether the flow rate through the plurality of pipes are supplied to all generations of the building, and when opening and closing the valve of the pipe in each generation, as much as desired Determining whether water is supplied, and determining whether the other generation valve is not affected when opening and closing the valve of the pipe in the household.

According to the water pipe design method using the BIM system according to the present invention, before constructing a building, the pipe can be modeled as a BIM model to derive an optimum diameter, head, and authority.

And it is possible to derive the exact pipe diameter and quantity through the equation.

1 is a flow chart showing a water pipe design method using a BIM system according to an embodiment of the present invention.
Figure 2 is a block diagram showing a water pipe design system using a BIM system according to an embodiment of the present invention.
3 is an exemplary view showing a modeling server according to an embodiment of the present invention.
4 to 5 is an exemplary view showing a condition server according to an embodiment of the present invention.
6 to 7 are exemplary views showing a name server according to an embodiment of the present invention.
8 to 9 are exemplary views showing an analysis server according to an embodiment of the present invention.
10 is a flowchart illustrating a method of determining a pipe in a determination server according to an embodiment of the present invention.
11 is an exemplary view showing a state of determining the pipe in the determination server shown in FIG.
12 to 13 are exemplary views showing an expression server according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention; However, the present invention is not limited to these embodiments and may be modified in various forms.

In the drawings, illustrations of parts not related to the description are omitted in order to clearly and briefly describe the present invention, and the same reference numerals are used for the same or extremely similar parts throughout the specification. In the drawings, the thickness, the width, and the like are enlarged or reduced in order to clarify the description. The thickness, the width, and the like of the present invention are not limited to those shown in the drawings.

And when any part of the specification "includes" other parts, unless otherwise stated, other parts are not excluded, and may further include other parts.

Hereinafter, a water pipe design method using a BIM system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart showing a water pipe design method using a BIM system according to an embodiment of the present invention, Figure 2 is a block diagram showing a water pipe design system using a BIM system according to an embodiment of the present invention. .

1 to 2, the water pipe design method using the BIM system according to an embodiment of the present invention is the optimum pipe diameter and quantity and authority (Authority) of the correct pipe 100 before the actual construction Can be derived.

Here, the authority may be a measure for determining whether the opening degree of the flow regulating valve properly reflects the output (load or calorific value).

As such, in the present invention, in order to derive a more accurate view and quantity of the pipe 100 before the actual construction starts, the pipe 100 is modeled as the actual length installed in the building, and the flow rate, water temperature, differential pressure, etc. The design method for deriving it by the formula can be explained.

In operation S1100, the piping 100, which is actually installed in the building in the modeling server 200, may be modeled in 3D by using a building information modeling (BIM) model.

The modeling server 200 designs a 3D-based BIM model, and may include one or more programs of revit, archiCAD, or bentley, and includes a plug-in in the modeling server 200. The pipe 100 may be modeled by using a tool generated in the form of a plug-in.

In this case, the modeling server 200 may model the exterior or internal design elements of the building together with the pipe 100 or model the pipe 100 to be applied to an actual location installed in the building.

Such, the modeling server 200 is connected to the generation pipe unit 210 for modeling the generation pipe 110 connected to each generation of the building, the main pipe 120 extending to the ground by connecting a plurality of household pipes (110). The main pipe 220 to model may be provided.

The household piping unit 210 may be an in-house piping 100 (terminal) formed for each generation of the modeled building, and may be a plurality of pipes 100 installed inside the household.

The main pipe part 220 may connect the plurality of household pipe parts 210 to each other to extend to the lower ground of the building, and water, wastewater, and the like delivered from each household may be delivered.

In operation S1200, the analysis condition may be input to the main pipe 120 in the main condition unit 420 to derive the diameter and quantity of the main pipe 120 modeled by the modeling server 200.

At this time, the main condition unit 420 is provided in the condition server 400 as shown in Figures 4 to 5, the condition server 400 is at least one of the flow rate, the differential pressure, the type of fluid in the generation pipe 110 The generation condition unit 410 for inputting one analysis condition and the main condition unit 420 for inputting at least one analysis condition among the flow rate, the differential pressure, and the fluid type of the main pipe 120 may be provided.

As such, at least one analysis condition of a flow rate, a differential pressure, and a fluid type in the main pipe 120 connecting the respective generation pipes 110 in the main condition unit 420 may be input, and in order to input an analysis condition separately. A separate window may be generated in which a pipe 100 category is generated in the parameter window of the pipe 100 to input information necessary for analyzing the main pipe 120 in detail.

The pipe 100 category may be input before modeling the pipe 100 to automatically generate a necessary information input window in the condition server 400.

In operation S1300, referring to FIG. 6, a name may be input to the name server 300 to apply a name to each of the plurality of generation pipes 110 connected to the main pipe 120 to be modeled.

In the name server 300, as shown in FIG. 7, the name is applied to each household pipe 110, and divided into the building and the lake of the building so as to be clear and easy to classify collectively or to the flow rate and the differential pressure. You can enter a separate name accordingly.

In operation S1400, as described in operation S1300, the analysis condition may be input to the generation pipe 110 by the generation condition unit 410 of the condition server 400.

In order to analyze the generation pipe 110 modeled for each generation, at least one analysis condition among flow rates, differential pressures, and fluid types may be input as shown in FIGS. 4 to 5.

In operation S1500, a target condition for analyzing the pipe 100 modeled by the modeling server 200 may be input by the condition input unit 510 of the analysis server 500 as illustrated in FIG. 8.

The target condition may be a target set in advance so that the pipe 100 is installed in the building, and is at least one of a target flow rate, a target differential pressure, a temperature of water, and a type of the pipe 100.

At this time, by inputting the temperature of the water set as the target condition, it is possible to clarify that the flow rate and the differential pressure of the water change according to the temperature, and it can be interpreted more precisely.

As such, the analysis server 500 for inputting the target condition includes a condition input unit 510 for inputting at least one target condition among the target flow velocity, target differential pressure, water temperature, and the type of the pipe 100 in the pipe 100. ), A calculation analysis unit 520 for calculating the pipe diameter and quantity of the pipe 100 by a formula, and whether the pipe diameter of the pipe 100 analyzed by the calculation analysis unit 520 is properly applied to the building. The determination server 530 may be provided.

The condition input unit 510 generates a separate window, in which the various target values are stored or can be input by the user.

In operation S1600, the target condition input by the condition input unit 510 may be sequentially analyzed by the analysis unit 520.

Firstly, the fluid flow may be determined in order to calculate the diameter and quantity of the pipe 100, and the Reynold's number defined as the relative ratio of the inertia force to the viscous force may be calculated.

In order to calculate Reynolds number (Re) as shown in [Equation 1], the kinematic viscosity (υ) can be derived by inputting the fluid type and temperature condition, and the modeled diameter (D) and the flow rate (v) can be input.

Second, different equations may be needed for different regions to determine the laminar, transition, and turbulence of Reynolds numbers.

In the case of laminar flow (Re <2300) [Equation 2] is applied,

In case of transition (2300 <Re <4000), it is assumed to be turbulent without special formula.

In the case of turbulence, (Re> 4000) [Equation 3] can be applied.

And third, to calculate the value of f can be calculated by the above equation (2).

Next, f, fluid density (p), flow velocity, and diameter can be input in [Equation 4] to derive the linear pressure drop value.

Therefore, the diameter of the pipe 100 suitable for the target flow rate and the target linear pressure drop may be determined based on the derived value.

And the differential pressure of each pipe 100 can be calculated from the determined pipe diameter of the pipe 100.

At this time, the head of the pipe 100 is set to the maximum value of the sum of the differential pressures of the respective generation pipes 110. In addition, the authority may be a value obtained by dividing a control valve differential pressure of each generation pipe 110 by a differential pressure of a corresponding circulation path.

As such, the authority (Authority) as shown in the graph of Figure 9 (a) graph may indicate that the heat amount also increases when the flow rate is increased when the diameter is the same in the water pipe system.

And (b) the graph is a flow rate graph according to the opening degree of the control valve may have a different curve for each valve.

Finally, (c) graph shows that both (a) graph and (b) graph are formed to satisfy desired calorie according to opening degree.

As shown in the graph, factors affecting authority include variation in differential pressure at partial load, oversizing of control valves, and wrong control track characteristics, and criteria for sufficiently securing the authority may be 0.25 or more.

As a result, the differential pressure across the control valve must be stabilized to ensure stability and accuracy of control.

In operation S1700, the determination server 530 may determine whether the pipe diameter and the quantity of the pipe 100 calculated by the calculation analysis unit 520 of the analysis server 500 are appropriate.

In addition, as the method for determining the authority by determining the pipe 100 in the determination server 530, as shown in FIG. 10, are flow rates passing through the plurality of pipes 100 supplied to all generations of the building? Determining the step (S2100), and when opening and closing the valve of the pipe 100 in each generation, the step of determining whether the amount of water is supplied (S2200) and the valve of the pipe 100 in the household When it is opened and closed, it may be determined as shown in FIG. 11 by the step S2300 of determining whether it does not affect other generations of valves.

At this time, if it is determined that the pipe 100 determined by the determination server 530 of step S1700 is suitable, it can be displayed in step S1900, and if it is determined that the pipe 100 is inappropriate in the determination server 530 in step S1800 The diameter and type of the pipe 100 can be changed.

In operation S1200, the analysis condition may be input to the pipe 100 again and the pipe 100 may be analyzed.

In operation S1900, the diameter and quantity of the pipe 100 appropriately derived from the expression server 600 may be expressed in a figure as shown in FIG. 11 or as a document such as Excel as shown in FIG. 12.

The display server 600 may display a change in the diameter of the pipe 100 for each position and a head change report of the pipe 100, a change in quantity and cost for each pipe diameter.

In the above described the water pipe design method using the BIM system according to an embodiment of the present invention, the spirit of the present invention is not limited to the embodiment presented herein. And those skilled in the art to understand the spirit of the present invention can easily suggest other embodiments by the addition, modification, deletion, addition, etc. of the elements within the scope of the same idea, but also within the scope of the invention It will cost.

100: piping 110: household piping
120: main pipe 200: modeling server
210: household piping 220: main piping
300: name server 400: condition server
410: household conditional 420: main conditional
500: analysis server 510: condition input unit
520: calculation analysis unit 530: judgment server
600: display server

Claims (7)

In the design method of the water pipe which is constructed in a building,
(a) modeling a plurality of pipes applied to the building in a modeling server;
(b) inputting a name of the pipe modeled for each generation into a name server;
(c) inputting analysis conditions to the condition server for analyzing each of the pipes;
(d) analyzing a plurality of pipe diameters and quantities to be applied to the building in an analysis server;
(e) expressing the pipes analyzed by the analysis server in an expression server;
Water pipe design method using a BIM system comprising a.
The method of claim 1,
in step (d),
Changing the diameter and type of the pipe if the result of the pipe analyzed by the analysis server is not suitable and is not joined to the building;
Reinterpreting the changed pipe in the analysis server;
Water pipe design method using the BIM system, characterized in that it comprises a.
The method of claim 1,
The modeling server and the generation piping for modeling the generation pipe connected to each generation of the building,
A water pipe design method using a BIM system comprising a main pipe unit for connecting the plurality of generation pipes to model the main pipe extending to the ground.
The method of claim 3, wherein
The name server is a water pipe design method using the BIM system, characterized in that the input of the building and the lake to the generation pipe modeled for each generation of the building.
The method of claim 3, wherein
The condition server includes a generation condition unit for inputting at least one analysis condition among a flow rate, a differential pressure, and a fluid type in the generation pipe;
And a main condition portion for inputting at least one analysis condition among the flow rate, the differential pressure, and the type of the fluid of the main pipe.
The method of claim 3, wherein
The analysis server may include a condition input unit for inputting at least one target condition among a target flow rate, a target differential pressure, a water temperature, and a type of the pipe in the pipe;
A calculation analysis unit for calculating the pipe diameter and quantity of the pipe by a formula;
And a determination server for determining whether the pipe diameter of the pipe analyzed by the calculation analysis unit is properly applied to the building.
The method of claim 3, wherein
In the method of determining the pipe in the determination server,
Determining whether flow rates through the plurality of pipes are supplied to all generations of the building;
Determining whether water is supplied as desired when opening and closing the valve of the pipe in each generation;
The method of designing a water pipe using the BIM system, characterized in that when opening and closing the valve of the pipe in the household, it is determined that it does not affect the valve of the other household.

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